./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6882eeeeda078376f05bcbd4b1762ced588254a85bc5f57e76099cec8f6bde3a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:54:28,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:54:28,790 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:54:28,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:54:28,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:54:28,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:54:28,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:54:28,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:54:28,845 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:54:28,845 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:54:28,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:54:28,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:54:28,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:54:28,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:54:28,846 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:54:28,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:54:28,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:54:28,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:54:28,849 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:54:28,849 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:54:28,849 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:54:28,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:54:28,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:54:28,849 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:54:28,849 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:54:28,850 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:54:28,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:54:28,850 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:54:28,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:54:28,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:54:28,850 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:54:28,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:54:28,851 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:54:28,851 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:54:28,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:54:28,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:54:28,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:54:28,851 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:54:28,851 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:54:28,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:54:28,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:54:28,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:54:28,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:54:28,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:54:28,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:54:28,852 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6882eeeeda078376f05bcbd4b1762ced588254a85bc5f57e76099cec8f6bde3a [2024-11-28 02:54:29,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:54:29,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:54:29,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:54:29,185 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:54:29,186 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:54:29,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2024-11-28 02:54:32,411 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/data/1da8cfe13/3335141617b64234b17ba84834e192fe/FLAGd2878b938 [2024-11-28 02:54:33,242 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:54:33,243 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2024-11-28 02:54:33,322 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/data/1da8cfe13/3335141617b64234b17ba84834e192fe/FLAGd2878b938 [2024-11-28 02:54:33,346 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/data/1da8cfe13/3335141617b64234b17ba84834e192fe [2024-11-28 02:54:33,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:54:33,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:54:33,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:54:33,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:54:33,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:54:33,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:33" (1/1) ... [2024-11-28 02:54:33,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5978f38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:33, skipping insertion in model container [2024-11-28 02:54:33,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:33" (1/1) ... [2024-11-28 02:54:33,477 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:54:33,864 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2024-11-28 02:54:33,873 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2024-11-28 02:54:35,094 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,095 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,096 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,096 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,098 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,113 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,114 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,116 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,117 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,119 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,121 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,121 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:35,122 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,468 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,470 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,512 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,513 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,521 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,523 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,548 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,549 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,550 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,550 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,552 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,553 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,554 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,609 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[228095,228108] [2024-11-28 02:54:36,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:54:36,663 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:54:36,687 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2024-11-28 02:54:36,688 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2024-11-28 02:54:36,753 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,754 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,754 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,756 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,756 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,766 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,770 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,771 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,772 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,776 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,777 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,778 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,778 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:36,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2024-11-28 02:54:37,050 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,051 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,061 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,062 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,065 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,065 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,080 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,082 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,083 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,083 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,084 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,085 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,085 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:54:37,112 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[228095,228108] [2024-11-28 02:54:37,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:54:37,396 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:54:37,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37 WrapperNode [2024-11-28 02:54:37,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:54:37,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:54:37,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:54:37,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:54:37,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,635 INFO L138 Inliner]: procedures = 763, calls = 2436, calls flagged for inlining = 67, calls inlined = 9, statements flattened = 598 [2024-11-28 02:54:37,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:54:37,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:54:37,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:54:37,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:54:37,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,656 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,753 INFO L175 MemorySlicer]: Split 284 memory accesses to 9 slices as follows [2, 238, 9, 2, 6, 3, 2, 17, 5]. 84 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 6, 0, 0, 0, 0, 1, 0, 5]. The 240 writes are split as follows [0, 232, 3, 1, 2, 1, 0, 1, 0]. [2024-11-28 02:54:37,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,819 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:54:37,874 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:54:37,874 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:54:37,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:54:37,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (1/1) ... [2024-11-28 02:54:37,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:54:37,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:37,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:54:37,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:54:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-28 02:54:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-28 02:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-28 02:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-28 02:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-28 02:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-28 02:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-28 02:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-28 02:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-28 02:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2024-11-28 02:54:37,947 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2024-11-28 02:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:54:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:54:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:54:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:54:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 02:54:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 02:54:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 02:54:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 02:54:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 02:54:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 02:54:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:54:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:54:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-28 02:54:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-28 02:54:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:54:37,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:54:37,950 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-28 02:54:37,950 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-28 02:54:37,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 02:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 02:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 02:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 02:54:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 02:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-28 02:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:54:37,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 02:54:37,954 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 02:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-28 02:54:37,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-28 02:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 02:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 02:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 02:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 02:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 02:54:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:54:37,955 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 02:54:37,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 02:54:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 02:54:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 02:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 02:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 02:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-28 02:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-28 02:54:37,958 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-28 02:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 02:54:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 02:54:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 02:54:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-28 02:54:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-28 02:54:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2024-11-28 02:54:37,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2024-11-28 02:54:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-28 02:54:37,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-28 02:54:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 02:54:37,960 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 02:54:37,961 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2024-11-28 02:54:37,961 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 02:54:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:54:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:54:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:54:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:54:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:54:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:54:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:54:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 02:54:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 02:54:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-28 02:54:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-28 02:54:38,482 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:54:38,486 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:54:44,985 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-28 02:54:44,985 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:54:44,998 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:54:44,998 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:54:44,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:44 BoogieIcfgContainer [2024-11-28 02:54:44,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:54:45,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:54:45,001 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:54:45,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:54:45,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:54:33" (1/3) ... [2024-11-28 02:54:45,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19369130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:54:45, skipping insertion in model container [2024-11-28 02:54:45,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:37" (2/3) ... [2024-11-28 02:54:45,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19369130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:54:45, skipping insertion in model container [2024-11-28 02:54:45,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:44" (3/3) ... [2024-11-28 02:54:45,008 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness.i [2024-11-28 02:54:45,023 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:54:45,025 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_swap_harness.i that has 17 procedures, 142 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 02:54:45,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:54:45,098 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c3afe19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:54:45,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:54:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 89 states have (on average 1.202247191011236) internal successors, (107), 94 states have internal predecessors, (107), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-28 02:54:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 02:54:45,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:45,113 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:45,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:45,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:45,120 INFO L85 PathProgramCache]: Analyzing trace with hash 35159209, now seen corresponding path program 1 times [2024-11-28 02:54:45,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:45,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615246837] [2024-11-28 02:54:45,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:45,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:54:53,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:53,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615246837] [2024-11-28 02:54:53,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615246837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:53,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:53,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:54:53,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139021107] [2024-11-28 02:54:53,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:53,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:54:53,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:53,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:54:53,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:54:53,355 INFO L87 Difference]: Start difference. First operand has 142 states, 89 states have (on average 1.202247191011236) internal successors, (107), 94 states have internal predecessors, (107), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:54:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:53,422 INFO L93 Difference]: Finished difference Result 280 states and 374 transitions. [2024-11-28 02:54:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:54:53,425 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-28 02:54:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:53,436 INFO L225 Difference]: With dead ends: 280 [2024-11-28 02:54:53,436 INFO L226 Difference]: Without dead ends: 137 [2024-11-28 02:54:53,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:54:53,447 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:53,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:53,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-28 02:54:53,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-28 02:54:53,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 89 states have internal predecessors, (99), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 02:54:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 168 transitions. [2024-11-28 02:54:53,511 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 168 transitions. Word has length 25 [2024-11-28 02:54:53,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:53,511 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 168 transitions. [2024-11-28 02:54:53,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:54:53,512 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 168 transitions. [2024-11-28 02:54:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 02:54:53,514 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:53,514 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:53,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:54:53,515 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:53,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:53,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1958985497, now seen corresponding path program 1 times [2024-11-28 02:54:53,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:53,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969692030] [2024-11-28 02:54:53,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:53,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:00,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:00,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969692030] [2024-11-28 02:55:00,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969692030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:00,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:00,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:55:00,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17411095] [2024-11-28 02:55:00,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:00,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:55:00,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:00,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:55:00,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:00,176 INFO L87 Difference]: Start difference. First operand 137 states and 168 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:55:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:00,278 INFO L93 Difference]: Finished difference Result 192 states and 238 transitions. [2024-11-28 02:55:00,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:55:00,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-28 02:55:00,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:00,284 INFO L225 Difference]: With dead ends: 192 [2024-11-28 02:55:00,284 INFO L226 Difference]: Without dead ends: 148 [2024-11-28 02:55:00,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:00,285 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 2 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:00,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 330 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:55:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-28 02:55:00,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-28 02:55:00,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 91 states have (on average 1.164835164835165) internal successors, (106), 95 states have internal predecessors, (106), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-28 02:55:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2024-11-28 02:55:00,302 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 25 [2024-11-28 02:55:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:00,304 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2024-11-28 02:55:00,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:55:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2024-11-28 02:55:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 02:55:00,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:00,305 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:00,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:55:00,305 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:00,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:00,306 INFO L85 PathProgramCache]: Analyzing trace with hash -63722128, now seen corresponding path program 1 times [2024-11-28 02:55:00,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:00,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655426725] [2024-11-28 02:55:00,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:00,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:06,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655426725] [2024-11-28 02:55:06,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655426725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:06,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:06,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:55:06,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752910232] [2024-11-28 02:55:06,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:06,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:55:06,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:06,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:55:06,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:06,318 INFO L87 Difference]: Start difference. First operand 148 states and 185 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:55:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:06,386 INFO L93 Difference]: Finished difference Result 202 states and 250 transitions. [2024-11-28 02:55:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:55:06,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-28 02:55:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:06,392 INFO L225 Difference]: With dead ends: 202 [2024-11-28 02:55:06,392 INFO L226 Difference]: Without dead ends: 157 [2024-11-28 02:55:06,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:06,394 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 2 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:06,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 332 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:55:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-28 02:55:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-28 02:55:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 99 states have internal predecessors, (110), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-28 02:55:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 196 transitions. [2024-11-28 02:55:06,424 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 196 transitions. Word has length 26 [2024-11-28 02:55:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:06,425 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 196 transitions. [2024-11-28 02:55:06,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:55:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 196 transitions. [2024-11-28 02:55:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 02:55:06,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:06,433 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:06,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:55:06,433 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:06,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash -152541444, now seen corresponding path program 1 times [2024-11-28 02:55:06,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:06,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848756891] [2024-11-28 02:55:06,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:06,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-28 02:55:12,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:12,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848756891] [2024-11-28 02:55:12,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848756891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:12,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915577094] [2024-11-28 02:55:12,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:12,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:12,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:12,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:12,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:55:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:19,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 4485 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:55:19,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 02:55:19,650 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:55:19,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915577094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:19,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:55:19,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-28 02:55:19,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19035637] [2024-11-28 02:55:19,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:19,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:55:19,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:19,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:55:19,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:55:19,653 INFO L87 Difference]: Start difference. First operand 157 states and 196 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:55:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:19,793 INFO L93 Difference]: Finished difference Result 313 states and 397 transitions. [2024-11-28 02:55:19,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:55:19,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 129 [2024-11-28 02:55:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:19,796 INFO L225 Difference]: With dead ends: 313 [2024-11-28 02:55:19,796 INFO L226 Difference]: Without dead ends: 162 [2024-11-28 02:55:19,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:55:19,799 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:19,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 656 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:55:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-28 02:55:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-28 02:55:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 100 states have (on average 1.14) internal successors, (114), 103 states have internal predecessors, (114), 44 states have call successors, (44), 16 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2024-11-28 02:55:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2024-11-28 02:55:19,816 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 129 [2024-11-28 02:55:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:19,816 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2024-11-28 02:55:19,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:55:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2024-11-28 02:55:19,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 02:55:19,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:19,820 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:19,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:55:20,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:20,021 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:20,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:20,022 INFO L85 PathProgramCache]: Analyzing trace with hash 209357336, now seen corresponding path program 1 times [2024-11-28 02:55:20,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:20,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644454490] [2024-11-28 02:55:20,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:20,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 02:55:31,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:31,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644454490] [2024-11-28 02:55:31,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644454490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:31,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005968088] [2024-11-28 02:55:31,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:31,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:31,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:31,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:31,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:55:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:38,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 4493 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:55:38,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:39,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:55:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:55:41,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:55:41,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005968088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:41,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:55:41,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 18 [2024-11-28 02:55:41,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324712242] [2024-11-28 02:55:41,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:41,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:55:41,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:41,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:55:41,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:55:41,244 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand has 13 states, 12 states have (on average 6.75) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-28 02:55:45,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:55:52,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:55:56,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:55:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:58,160 INFO L93 Difference]: Finished difference Result 377 states and 454 transitions. [2024-11-28 02:55:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:55:58,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.75) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 141 [2024-11-28 02:55:58,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:58,166 INFO L225 Difference]: With dead ends: 377 [2024-11-28 02:55:58,166 INFO L226 Difference]: Without dead ends: 261 [2024-11-28 02:55:58,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:55:58,168 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 131 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:58,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1888 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 470 Invalid, 3 Unknown, 0 Unchecked, 15.9s Time] [2024-11-28 02:55:58,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-28 02:55:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2024-11-28 02:55:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 165 states have (on average 1.1454545454545455) internal successors, (189), 169 states have internal predecessors, (189), 60 states have call successors, (60), 29 states have call predecessors, (60), 32 states have return successors, (61), 60 states have call predecessors, (61), 58 states have call successors, (61) [2024-11-28 02:55:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 310 transitions. [2024-11-28 02:55:58,215 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 310 transitions. Word has length 141 [2024-11-28 02:55:58,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:58,215 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 310 transitions. [2024-11-28 02:55:58,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.75) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-28 02:55:58,216 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 310 transitions. [2024-11-28 02:55:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 02:55:58,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:58,223 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:58,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:55:58,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:58,423 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:58,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash -283268838, now seen corresponding path program 1 times [2024-11-28 02:55:58,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:58,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33607917] [2024-11-28 02:55:58,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:58,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 02:56:05,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33607917] [2024-11-28 02:56:05,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33607917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393162130] [2024-11-28 02:56:05,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:05,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:05,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:05,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:05,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:56:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:11,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 4488 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:56:11,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:56:12,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:56:12,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393162130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:12,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:56:12,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 02:56:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744818509] [2024-11-28 02:56:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:12,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:56:12,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:12,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:56:12,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:56:12,433 INFO L87 Difference]: Start difference. First operand 258 states and 310 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-28 02:56:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:13,444 INFO L93 Difference]: Finished difference Result 389 states and 470 transitions. [2024-11-28 02:56:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:56:13,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 141 [2024-11-28 02:56:13,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:13,448 INFO L225 Difference]: With dead ends: 389 [2024-11-28 02:56:13,448 INFO L226 Difference]: Without dead ends: 270 [2024-11-28 02:56:13,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:56:13,450 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 166 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:13,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 572 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:56:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-28 02:56:13,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 267. [2024-11-28 02:56:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 171 states have (on average 1.1461988304093567) internal successors, (196), 176 states have internal predecessors, (196), 62 states have call successors, (62), 29 states have call predecessors, (62), 33 states have return successors, (64), 62 states have call predecessors, (64), 60 states have call successors, (64) [2024-11-28 02:56:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 322 transitions. [2024-11-28 02:56:13,485 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 322 transitions. Word has length 141 [2024-11-28 02:56:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:13,486 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 322 transitions. [2024-11-28 02:56:13,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-28 02:56:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 322 transitions. [2024-11-28 02:56:13,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 02:56:13,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:13,489 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:13,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:56:13,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:13,690 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:13,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:13,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1412508686, now seen corresponding path program 1 times [2024-11-28 02:56:13,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:13,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104085692] [2024-11-28 02:56:13,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:13,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 02:56:22,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:22,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104085692] [2024-11-28 02:56:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104085692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:22,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965877295] [2024-11-28 02:56:22,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:22,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:22,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:22,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:22,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:56:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:30,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 4491 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 02:56:30,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:31,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:56:34,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2024-11-28 02:56:34,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-28 02:56:34,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 51 [2024-11-28 02:56:34,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 21 [2024-11-28 02:56:34,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-11-28 02:56:34,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:56:34,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2024-11-28 02:56:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 02:56:36,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:56:36,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965877295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:36,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:56:36,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 21 [2024-11-28 02:56:36,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685471973] [2024-11-28 02:56:36,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:36,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:56:36,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:36,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:56:36,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:56:36,242 INFO L87 Difference]: Start difference. First operand 267 states and 322 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 15 states have internal predecessors, (80), 9 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-28 02:56:40,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:56:50,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:56:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:51,553 INFO L93 Difference]: Finished difference Result 505 states and 601 transitions. [2024-11-28 02:56:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:56:51,553 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 15 states have internal predecessors, (80), 9 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 140 [2024-11-28 02:56:51,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:51,557 INFO L225 Difference]: With dead ends: 505 [2024-11-28 02:56:51,557 INFO L226 Difference]: Without dead ends: 302 [2024-11-28 02:56:51,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 123 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:56:51,561 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 115 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:51,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 2271 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 789 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2024-11-28 02:56:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-28 02:56:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 297. [2024-11-28 02:56:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 194 states have (on average 1.1443298969072164) internal successors, (222), 199 states have internal predecessors, (222), 65 states have call successors, (65), 34 states have call predecessors, (65), 37 states have return successors, (66), 64 states have call predecessors, (66), 62 states have call successors, (66) [2024-11-28 02:56:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 353 transitions. [2024-11-28 02:56:51,612 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 353 transitions. Word has length 140 [2024-11-28 02:56:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:51,612 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 353 transitions. [2024-11-28 02:56:51,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 15 states have internal predecessors, (80), 9 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-28 02:56:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 353 transitions. [2024-11-28 02:56:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 02:56:51,616 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:51,616 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:51,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:56:51,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:51,817 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:51,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:51,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2010713213, now seen corresponding path program 1 times [2024-11-28 02:56:51,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:51,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278590986] [2024-11-28 02:56:51,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:51,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-28 02:56:59,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:59,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278590986] [2024-11-28 02:56:59,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278590986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:59,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135980939] [2024-11-28 02:56:59,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:59,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:59,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:59,828 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:59,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:57:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:07,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 4517 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:57:07,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:12,217 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((v_aws_hash_table_is_valid_~map.base_4 Int) (v_aws_hash_table_is_valid_~map.offset_4 Int)) (not (= (select (select |c_#memory_$Pointer$#2.offset| v_aws_hash_table_is_valid_~map.base_4) v_aws_hash_table_is_valid_~map.offset_4) 0))) (exists ((v_aws_hash_table_is_valid_~map.base_4 Int) (v_aws_hash_table_is_valid_~map.offset_4 Int)) (not (= (select (select |c_#memory_$Pointer$#2.base| v_aws_hash_table_is_valid_~map.base_4) v_aws_hash_table_is_valid_~map.offset_4) 0)))) is different from true [2024-11-28 02:57:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 02:57:20,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:57:20,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135980939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:20,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:57:20,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 02:57:20,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63051154] [2024-11-28 02:57:20,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:20,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:57:20,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:20,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:57:20,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=105, Unknown=3, NotChecked=20, Total=156 [2024-11-28 02:57:20,856 INFO L87 Difference]: Start difference. First operand 297 states and 353 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-28 02:57:25,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:57:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:25,723 INFO L93 Difference]: Finished difference Result 534 states and 642 transitions. [2024-11-28 02:57:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:57:25,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 147 [2024-11-28 02:57:25,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:25,729 INFO L225 Difference]: With dead ends: 534 [2024-11-28 02:57:25,729 INFO L226 Difference]: Without dead ends: 306 [2024-11-28 02:57:25,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=28, Invalid=105, Unknown=3, NotChecked=20, Total=156 [2024-11-28 02:57:25,731 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 3 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:25,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 948 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 1 Unknown, 186 Unchecked, 4.8s Time] [2024-11-28 02:57:25,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-28 02:57:25,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 301. [2024-11-28 02:57:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 198 states have (on average 1.1363636363636365) internal successors, (225), 201 states have internal predecessors, (225), 65 states have call successors, (65), 36 states have call predecessors, (65), 37 states have return successors, (66), 64 states have call predecessors, (66), 62 states have call successors, (66) [2024-11-28 02:57:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 356 transitions. [2024-11-28 02:57:25,792 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 356 transitions. Word has length 147 [2024-11-28 02:57:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:25,792 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 356 transitions. [2024-11-28 02:57:25,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-28 02:57:25,793 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 356 transitions. [2024-11-28 02:57:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 02:57:25,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:25,798 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:25,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:57:25,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:25,999 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:25,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:25,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1177093399, now seen corresponding path program 1 times [2024-11-28 02:57:25,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:25,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045045693] [2024-11-28 02:57:25,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:26,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 02:57:37,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:37,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045045693] [2024-11-28 02:57:37,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045045693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:37,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:37,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:57:37,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951210167] [2024-11-28 02:57:37,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:37,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:57:37,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:37,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:57:37,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:57:37,566 INFO L87 Difference]: Start difference. First operand 301 states and 356 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 7 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-28 02:57:40,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:40,516 INFO L93 Difference]: Finished difference Result 324 states and 380 transitions. [2024-11-28 02:57:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:57:40,517 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 7 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 154 [2024-11-28 02:57:40,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:40,520 INFO L225 Difference]: With dead ends: 324 [2024-11-28 02:57:40,520 INFO L226 Difference]: Without dead ends: 310 [2024-11-28 02:57:40,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:57:40,522 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 28 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:40,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1497 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 02:57:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-28 02:57:40,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 304. [2024-11-28 02:57:40,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 200 states have (on average 1.135) internal successors, (227), 204 states have internal predecessors, (227), 65 states have call successors, (65), 36 states have call predecessors, (65), 38 states have return successors, (67), 64 states have call predecessors, (67), 62 states have call successors, (67) [2024-11-28 02:57:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 359 transitions. [2024-11-28 02:57:40,557 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 359 transitions. Word has length 154 [2024-11-28 02:57:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:40,558 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 359 transitions. [2024-11-28 02:57:40,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 7 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-28 02:57:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 359 transitions. [2024-11-28 02:57:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 02:57:40,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:40,561 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:40,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:57:40,561 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:40,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash 784066389, now seen corresponding path program 1 times [2024-11-28 02:57:40,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:40,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259924397] [2024-11-28 02:57:40,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:40,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 02:57:46,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259924397] [2024-11-28 02:57:46,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259924397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:46,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:46,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111938558] [2024-11-28 02:57:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:46,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:57:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:46,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:57:46,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:46,749 INFO L87 Difference]: Start difference. First operand 304 states and 359 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 02:57:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:46,931 INFO L93 Difference]: Finished difference Result 525 states and 618 transitions. [2024-11-28 02:57:46,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:57:46,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 154 [2024-11-28 02:57:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:46,935 INFO L225 Difference]: With dead ends: 525 [2024-11-28 02:57:46,936 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 02:57:46,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:46,938 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 8 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:46,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 628 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:57:46,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 02:57:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-11-28 02:57:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 186 states have (on average 1.1129032258064515) internal successors, (207), 190 states have internal predecessors, (207), 63 states have call successors, (63), 34 states have call predecessors, (63), 36 states have return successors, (63), 62 states have call predecessors, (63), 60 states have call successors, (63) [2024-11-28 02:57:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 333 transitions. [2024-11-28 02:57:46,976 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 333 transitions. Word has length 154 [2024-11-28 02:57:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:46,977 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 333 transitions. [2024-11-28 02:57:46,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 02:57:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 333 transitions. [2024-11-28 02:57:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-28 02:57:46,981 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:46,981 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:46,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:57:46,981 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:46,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:46,982 INFO L85 PathProgramCache]: Analyzing trace with hash 159811356, now seen corresponding path program 1 times [2024-11-28 02:57:46,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:46,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119681495] [2024-11-28 02:57:46,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:46,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 02:57:57,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:57,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119681495] [2024-11-28 02:57:57,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119681495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:57,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490836066] [2024-11-28 02:57:57,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:57,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:57,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:57,115 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:57,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:58:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:04,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 4605 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:58:04,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:04,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-28 02:58:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 02:58:07,677 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:07,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490836066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:07,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:58:07,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 18 [2024-11-28 02:58:07,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197325651] [2024-11-28 02:58:07,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:07,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:58:07,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:07,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:58:07,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:58:07,681 INFO L87 Difference]: Start difference. First operand 286 states and 333 transitions. Second operand has 14 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 5 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2024-11-28 02:58:10,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:10,869 INFO L93 Difference]: Finished difference Result 435 states and 506 transitions. [2024-11-28 02:58:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:58:10,870 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 5 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) Word has length 167 [2024-11-28 02:58:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:10,873 INFO L225 Difference]: With dead ends: 435 [2024-11-28 02:58:10,873 INFO L226 Difference]: Without dead ends: 316 [2024-11-28 02:58:10,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:58:10,875 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 13 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:10,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1776 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 02:58:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-28 02:58:10,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 296. [2024-11-28 02:58:10,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 193 states have (on average 1.1088082901554404) internal successors, (214), 198 states have internal predecessors, (214), 63 states have call successors, (63), 34 states have call predecessors, (63), 39 states have return successors, (67), 64 states have call predecessors, (67), 60 states have call successors, (67) [2024-11-28 02:58:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 344 transitions. [2024-11-28 02:58:10,910 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 344 transitions. Word has length 167 [2024-11-28 02:58:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:10,911 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 344 transitions. [2024-11-28 02:58:10,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 5 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2024-11-28 02:58:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 344 transitions. [2024-11-28 02:58:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 02:58:10,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:10,915 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:10,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:58:11,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:11,119 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:11,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2077475895, now seen corresponding path program 1 times [2024-11-28 02:58:11,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:11,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082896836] [2024-11-28 02:58:11,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:11,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 02:58:20,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082896836] [2024-11-28 02:58:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082896836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:20,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199017636] [2024-11-28 02:58:20,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:20,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:20,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:20,081 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:20,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:58:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:27,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 4609 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-28 02:58:27,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:27,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-28 02:58:29,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:58:29,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-28 02:58:29,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:58:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:58:34,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:39,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199017636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:39,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:58:39,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20] total 25 [2024-11-28 02:58:39,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90668891] [2024-11-28 02:58:39,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:39,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:58:39,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:39,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:58:39,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:58:39,360 INFO L87 Difference]: Start difference. First operand 296 states and 344 transitions. Second operand has 25 states, 21 states have (on average 6.809523809523809) internal successors, (143), 21 states have internal predecessors, (143), 9 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (43), 9 states have call predecessors, (43), 9 states have call successors, (43) [2024-11-28 02:58:42,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:42,998 INFO L93 Difference]: Finished difference Result 585 states and 681 transitions. [2024-11-28 02:58:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:58:42,999 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 6.809523809523809) internal successors, (143), 21 states have internal predecessors, (143), 9 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (43), 9 states have call predecessors, (43), 9 states have call successors, (43) Word has length 169 [2024-11-28 02:58:43,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:43,003 INFO L225 Difference]: With dead ends: 585 [2024-11-28 02:58:43,003 INFO L226 Difference]: Without dead ends: 302 [2024-11-28 02:58:43,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:58:43,005 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 16 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:43,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2400 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 02:58:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-28 02:58:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 299. [2024-11-28 02:58:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 195 states have (on average 1.1076923076923078) internal successors, (216), 201 states have internal predecessors, (216), 63 states have call successors, (63), 34 states have call predecessors, (63), 40 states have return successors, (67), 64 states have call predecessors, (67), 60 states have call successors, (67) [2024-11-28 02:58:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 346 transitions. [2024-11-28 02:58:43,036 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 346 transitions. Word has length 169 [2024-11-28 02:58:43,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:43,036 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 346 transitions. [2024-11-28 02:58:43,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 6.809523809523809) internal successors, (143), 21 states have internal predecessors, (143), 9 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (43), 9 states have call predecessors, (43), 9 states have call successors, (43) [2024-11-28 02:58:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 346 transitions. [2024-11-28 02:58:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-28 02:58:43,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:43,039 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:43,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:43,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:43,240 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:43,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:43,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1817194514, now seen corresponding path program 2 times [2024-11-28 02:58:43,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:43,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079347845] [2024-11-28 02:58:43,241 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:58:43,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:51,386 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:58:51,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-28 02:58:53,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:53,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079347845] [2024-11-28 02:58:53,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079347845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:53,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650580788] [2024-11-28 02:58:53,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:58:53,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:53,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:53,081 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:53,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc51fe92-782e-4f3a-b047-34e8312db0ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process